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Car has rough idle only when engine is cold.

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    #1

    Car has rough idle only when engine is cold.

    I'm having a problem with the idle of my '93 lx coupe only when starting up and with a cold engine.

    Upon start up, the idle is only 500rpm or so, sometimes dipping even lower and coming close to stalling out. There's no issue with driveability if I force the engine to rev faster by forcing the gas a little, or if I let the idling car sit and reach operating temperature.

    The idle is a smooth 800rpm under normal conditions.
    Tags: None
    #2
    I had that same problem and ended up failing emissions.My mech cleaned my egr ports and adjusted my timing(i'm sure via turn of distributor) and now mine idles a bit lower,but more of a steady idle,especially in the morning

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      #3
      http://www.cb7tuner.com/vbb/showpost...33&postcount=1

      try re adjusting the base idle. good luck and keep us updated.

      A man that keeps looking back can't see whats in front of him.

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        #4
        Thanks for the replies! I did consider the EGR ports. Two years ago I milled the EGR ports flat and drilled + tapped holes to accept set screws. The ports looked clean when I peered in there.

        The distributor is brand new; it has 1500 miles on it.

        I'll try resetting the idle tomorrow. Thanks for the tip

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